Not certain, would have thought so though. Most devices that go into standby with inactivity settings do so because there is no output signal (such as music or even white noise I guess) to keep it active.

@BCT87 We confirm the A3143 speaker works same way with SoundCore speaker. When the audio cable plugged in, it will not enter power saving mode. It only auto power off in 10 minutes when Bluetooth disconnected. Thanks

Is your device still connected via Bluetooth or auxiliary? You may want to reach out to support@Anker.com and send them your order number/ serial number and issue you are having as well as steps you have taken to try and fix the issue